Guys, why this guy asks these and keep mention about tinder in front of me?

I have been going out with a guy i met via tinder for a month. He from time to time mention something like “ are you still using tinder?” “you are texting your bf?”“ while i take rest so you can text the people on tinder”“ when was the unread message on your tinder?” he kind of mention all these out of thr blue while our conversation had nothing to do with tinder. He at the same time, will deliberately mention about girls in front of me ( he for sure know that i am jealous but still talk about these) Why? He seems like care but he says he is not sure he likes me or no and feat of being exclusive.